Liquid-dispensing apparatus



J. B. DAVIS.

LIQUHJ DISPENSING APPARATUS. APPLICATION FILED AUG.4. 1919.

1,341,263, Patented May 1920.

3 $HEETS T I.

ATTOR N EY5.

BY I v Z J. B. DAWS.

LIQUID DiSPENSiNG APPARATUS. wmmmmw HLED AUGJ, 1919.

Patented May 25, 1920.

3 SHEETS-SHEET 2- ATTORNEYS.

J. B. DAVIS. LIQUID DISPENSWG APPARATUS. APPLICATION mzp AUG.4. 29:9.

Patented May 25, 1920- a snzns-saan 3.

NIR

ATTORNEYcS WYW.'

UNITED, STATES PATENT OFFICE.

LIQUID-DISPENSING- APPARATUS. e

Specification of Letters Patent.

Patented May 25, 1920.

Application filed August 4, 1918. flerisi Zia. 315,209.

ders, together with meansto alternately connect the cylinders to the pump and at the some time to connect that cylinder, not connected to the pump, to the discharge pipe.

Another object of the invention is to pro vide a passage connecting the upper parts of the measuring cylinders, so that the iicp uid, pumped into one, will force air into the other to aid in the discharge of liquid therefrom.

Another object of the invention isto provide a pump, a chambered member thereon into which the pump discharges, and two visible measurin cylinders supported by and communicating with the chambered member, togcthcr with a valve in the latter to connect hrsl one and then the other cylinder to the pump and at the some time can nect that cylinder, not connected to the pump, to the discharge pipe. the valve being urron ed to simultaneously connect both cylimlhrs to n drain chumbcr. \vhcn dcsircd.

A furthcr object of the invention is to provide in p. liquid dispensing apparatus, generally improvcd mcclmnicol structurc.

Other objects and advantages will appear in the following description and in the illustrative embodiment of the invention in the accompanying drawings, in which- Figure l is a front elcvotionnl view of a liquid dispensing apparatus embodying the invention Figs. 2 and 3 are sectional plun views thereof taken on the lines 2-2 and 3-3 respectively of Fig. 1;

Fig. 4 is an enlarged fragmentary front elevations] view of thc chambcrcd nzcmbei interposed between the pump and the men uring cylinders;

the invention is to provide a pump and two visible measuring cyhn.

Figs. 5 and 6 are sectional elevational views thereof taken on the lines 5 -5 and respectively of Fig. 4;

is a. sectional plan view taken on of Fig. 4; 81s a. cross sectional view taken on the line 8--8 of Fig. 4; i Fig. 9 is a detail view of the controls the communication pump cylinder and the measuring 0 linders, and the communication between t 6 lat! and. the discharge pipe and the drain pipe' 1 the line 7 valve which ns well;

F i 10 is an enlarged fra tionn elevation of one of t cylinders;

Fig. 11 is a fragmentary sectional view showing the va ve 1n draining position;

Fig. 12 is a SQCtlOflHl the i2-12 of Fig. 11.

Referring to these drawings in detail; the dispensing apparatus, in general, comprises l sultnble pumn, preferably housed within a (tlSlHfI or pe estal; a chambered member which forms a cap for the pump cylinder, as well as for the casing or pedestal if such are used; 31 pair of visible measuring cylinders mounted on and amnected with the chun'ibcrcd member; a cop member for both measuring cylinders which preferably provides means for intercommunication between such cylinders; operating mechanism for the pump; a controlling valve to alternately connect the measuring cylinders to the pump and to connect one measuring Cylindcr to the discharge pipe when the other is i-onncctwl to the pump, as Well as to simultaneously conncct both With the drain; indicating mcuns for the measuring cylinders: end. if dcsircd, dis-char e register to totalizc he amounts discharged.

The pump. iudicutcd genei'nll by reference letter P. may be of any suitable type. is shown, it is of the single acting reciprocating piston type and includes a cylinder c; a piston p, preferably weighted, as at w, to permit rapid descent by gravity and a. piston rod 1* in the form of a ruck. be entire pump 1 is housed within a suitable hollow pedestal or casing-(l, and, through the base of the letter, an inlet pipe a enters and is connected to the base I) of th valve r is associated with inlet pipe a and is adapted to be lifted by the suction created mentary sece measurirfg between the by an upstroke of piston 71 and to close by pressure or gravity. The piston p is also provided with a valve 1), which remains closed on the upstroke of the piston, while valve a) is open, and opens on the dome stroke of the piston, which valve 1: is closed. to permit the passage of the fluid through the piston, to be subsequently lifted by the piston and discharged into one or the other of the measuring cylinders.

The top of the cylinder c. and preferably as shown the top of the pedestal C. are capped by a chambered member 15. Such member may conveniently be Inndc in the form of a cored casting. having a plurality of chambers and passageways, as will an pear, and a plane top face upon which two measuring cylinders 16 and 17 are secured in spaced relation, one on each side of the vertical axis of the pump P. The member 15 is bored out vertically to receive the toothed piston rod r (Fig. which extends upwardly and centrally between the cylilb ders 16 and 17 through a pipe in (Fig. l}. The member is likewise bored out horizontally to receive a shaft Ell) (Fig. 5) which shown in Fig. (l is milled near its central portion to provide a pinion 21 to mesh with rack r. The shaft extends outside member 15 (Fig. 3) and has lined thereon a clutch element 1'22 and carries loosely a handie 23 which has a clutch element 34' to engage with element 22. A spring pressed hall 25 is provided in handle 23 to engage in either of 't-wo circumferential grooves an in shaft 20 and thereby releasably hold the handle in either of its two positions -vim so that elements 22 and 24 are engaged or disengaged. By pushing handle :23 axially inward to engage such elements, the shall. 20 may be rotated and the raclt bar piston rod 1 lifted, and by thereafter pulling handle 2 axially outward the elements 22 and 34 are disengaged and the piston 72 is allowed to drop by gravity.

The member 153 is provided near its lower portion with a lluid inlet chamber 2?. which. as shown in Figs. 5 and 6, constantly communicates with the open upper end of the pumpcylinder c by way of an opening :28 in the lower wall of the member. This chamber 2T occupies all of the space in the lower half of member '15 except in! one corner which, as shown in Fig. 6. forms part of a drain chamber 22-l,-sp'ecilieally a sump to which is connected av drain pipe if? leadingdownwardly through pedestal and adapted for connection to the supply tank. The drain chamber 28 is of peculiar shape. From the pocket or sump. cmincclcd with pipe :29. it extends upwardly completely to the upper wall of member 15 for connection to a pipe, 30, threaded therein and her-emal'ter callcd an overflow pipe. The chamber 28 also extends along the rear hall' of member 15. but below the upper wall thereof and dips down in under the shalt 2 alter which il rises and is again hounded by the upper n all of member 15 as will be seen fr m Figs. ll and I. The right hand end (l igs. U and T) of chamber 28 is connected to a second overflow pipe ill. That portion ol' the right hand end of member 15 above the inlet chamber QT and forwardly from chamber 28 constitutes a chamber 32 which is connected by a short pipe 33 with the measuring cylinder ii. That portion of the left hand end ol' member 15 above the inlet chandler 27 an forwardly of the drain chamber :5 mn- $lllillith a chamber Ill which is connected by a short pipe 35 with the interior of measuring cylinder 16. Extending from limit to rear of member 15 and along the extreme upper portion thereof is a discharge chamber Elli. which is connected to a discharge pipe 37 (Figs. il. l). and ll). the highest point l' which is at least no higher than the tops of pipes 33 and 35.

That portion of member l5 l'orwarilly ol' the drain chamber 23 and between the chainhers 2T. 32. Ill, and Ill} is bored out in l'rustw conical form to receive a curves;ionilingly l'oli'nril plug vah e 15h. Ports 9. ll). ll. and 42 connect the chambers 2T. li, Ill. and 36 to such frustwcruiical bore. Such ports are 111" ranged in right angular relation and the \ulvc 3 is provided with curved passages 43 and ii. each of which is adapted to connccl. any one port to a port at right angles to it. Thus. \alve 38 may be so positioned that chambers .57 and 32 re placed in communi cation by means of passage 43. While passage 44- serves to place chamber Ill in cornunuiication with chamber 36. movement of valve ills ninety degrees from the illustrated position. will cause chambers 27 and ill to connnunieate through passage 43 while chambers 32 and 36 are connected by way of passage 41. Thus, fluid may be pumped into one n'ioasuring cylinder while the other measuring cylinder is connected to discharge through pipe 3?. The valve 38 has a diametrical passage 45. disposed between the passages 43 and 44,and this passage 45 is adapted to connect the chambers :2 and 34 so that both measuring cylinders communicate. The inner end lace of valve lka. as shown in Fig. 8, forms part of one wall of the drain chamber 28 and. thus. an axial passage ll}. which leads from the passage l5 to and through the inner end face of valve 38, scl'ves when desired to connect the measuring cylinders 32 and 34 to the drain chambcr The valve 35 is provided with a stem 4E7, iat H), the outer end of which is squared. as ii'xdicnled, to receive an operating handle liver this stem is placed a flange 49. which is suitably secured to member 15. A spring 50, coiled ab out stem 47, acts between flange 49 and the inner end face of valve 38 with a constant tendency to force valve 38 axially inward so that the valve is held tightly in its tapered bore at all times. A stuffing box -1.9 is provided to in sure against leakage around stem 47.

The measuring 0 linders l6 and 17 are secured to the top ace of member 15 with their overflow pipes 30 and 31, respectively, dis sed centrally therein. These cylinders are open at both ends, their lower ends being closed by member 15, except for the pipesliU, I31, 33, and 35 described, while their upper ends are connected by a ton header member 52 through which the cylinders 16 and 17 at all times communicate. At least one window 54 isprovided in each of the cylinders 16 and 17 and adjacent each window is an indicating scale, represented conventionally at 55.

If desired, a discharge register'may be provided as indicated conventionally at 56, such register being supported by means of a bracket 57 from the top of header member 52. A reciprocablc register actuating rod is shown at 58, such rod being slidable in' bracket 57 and depending through an extension 59 of pipe 18 into the latter and into such position as to be engaged by the upper end of rack r at the end of each stroke. ,Thus. each upstroke of rack r can readily be made to operate a register, such as 56, so that the total quantities discharged from the pump may be indicated thereon. The rod 5% is provided with a nut (if), which is adapted to abut the bracket 57 and limit the stroke of the pump in an obvious manner, and the nut. being threaded on rod 58, may be adjusted thereon as desired to vary such stroke. a check nut 61 being provided to hold nut on in adjusted position.

Referring now to Fig. 1'); there is provided on the top of the overflow pipe 31, an adjustable end section (52, which in this instancc is threadcd on pipe 31 and held in adjusted position by a check nut 63. An annular lioat (ii encompasses the section 62 and secured thereto is a valve plate 65 by means of which the upper cud of Section 62 may be closed, Guides on depend from plate (35 into scctiou (l2 and prevent the valve plate (,5 and float (H from lateral displacement when they are lifted by the rise of fluid in cylinder 17, as will appear. It is to be understood that a duplicate arrangcmcnt is provided in connection with the overflow pipe lifl ot cylinder l6.

Mcans are also provided to insure an air vent at timcs when it is desired to drain the measuring cylinders lfl and ii. both valve (15 and thc corresponding valve associated with ovcrflow pipc 3 bringpresumably closed at su h tinics. Ilhc vcnt dcvicc consisfs of a asing i thrcadcd into mcmbcr 52 and closed except for an inlct Tl for air and an outlet pipe 72 extending into passage 53. A valve 73, when lifted, permits communication between pipe 72 and passage 53, but is arranged to be lifted by the pressure of the air in casing 70. Consequently, during normal operation, when the pressure in passage 53c uals or exceeds atmospheric pressure, va ve 73 remains closed.

In operation, the operator turns handle 48 to bring valve 38 into such position that one of the chambers 32 and 34 is connected to the inlet chamber 27, the other of the chambers 32 and 34 being thereby connected to the discharged chamber 36. The handle 23, having previously been moved to engage the clutch members 22 and 24, is then turned in the usual manner to lift piston 12. The fluid is thus forced upwardly into and through the inlet chamber 27 and into one of the measuring cylinder chambers, as 32, and thence out through pipe 33 into the measuring cylinder 17. Assuming that the measuring cylinder 16 has previously been filled with fluid, it is, as has been seen, connected to discharge through pipe 35 into chamber 34 and thence by way of passage 41 to the discharge chamber 36. Therefore, since the valve 65 is closed to prevent outflow through pipe 31 and since the corresponding valve associated with overflow pipe 30 is also closed for a like purpose, the fluid as it rises in cylinder 1? forces the air upwardly thrrnigh passage 53 and downwardly rinto measuring cylindcr 16. Thus, such air forces the fluid previously pumped into cylinder 16 outwardly. This arrangement, whereby the pumping of fluid into one cylinder forces fluid previously pumped into the other cylinder outwardly, constitutes one of the important features of my invention.

As the fluid rises in cylindcr 17. it cvcntually lifts float 64 and raises valve (15. The stroke of piston 12 is so gagcd. b v adjustment of nut 60, as to supply fluid into the measuring cylindcrs somewhat above the ievel of the overflow pipe, or more particularly, above the top of the adjustable section 62 thcrcon. \Vhcu rack r is arrested by abutment of nut no with brackct 57, the operator ceases to turn handle 23. Meanwhile, the excess fluid above the top of pipe 62 enters therein and the valve 65. again closes. leaving an accurately measurcdquantity of fluid in cylinder ii. The operatorthen turns handle 48 to connect cylinder 17 totbe discharge chamber 26, thereby connecting cylinder if; to thc inlet chamber 27. The handle 23 may thcu he moved to discounect clutch elements 22 and 24. whereupon the piston p descends by gravity. Then the opcrator again connects handlc 23 to lift piston y) and repcats thc opcrations do; Scribod, whereupon the air cntcring cylinder 1'. forces the fluid outwardly until it rearhes the level of the top of pipe \Vhenever it is desired to drain the cylinders 16 and 17, the operator turns handle 48 to connect the chambers 32 and 34 to the drain chamber 28 and the valve 73 opens to permit the entrance of air to displace the liquid (if course. the valve Til will also open when either cylinder 16 or 17 connected to the discharge chamber and will permit such cylinder to drain by gravity. In practice, however. the operator pumps liquid into one cylinder very shortly after the other has been connected to the dis charge chamber and before the last-named cylinder has a chance to drain by reason of the small air vent afforded by valve 73. As soon as pumping is commenced, pressure, greater than atmospheric, Will be established in passage 53, and valve 73 will close, whereupon the pressure of the incomin; fluid will be transmitted by the air in cylinders 16 and 17 and passage 53, to the outflowing fluid to aid in discharging the latter. By this arrangement, a more speedy discharge of fluid will be obtained than would be by the vent valve 73 alone.

According to some features of the iuvention, the valves associated with the overflow pipes 30 and 31 may be omitted and even the connecting passage 53, for the remaining structural arrangement has utility apart from the features noted although surh fez?- tures are desirabl and preferred.

The invention has been disclosed herein, in the oniliodiment at present preferred. for illustrative purposes, but the scope of the invention is defined by the appended claims rather than by the foregoing description.

"hat claim is- 1. A liquid dispensing apparatus, comprising, a pump, two measuringcylinders. a member interposed between the pump and cylinders, rhambcrs in said member one for each cylinder and constantly communicating therewith. a pump chainbcr in said member to receive the. discharge from said pump, a delivery chamber in said member, and means to connect either one of said cylinder chambers to the pump chamber and the other to the delivery chamber.

2. A liquid dispensing apparatus, cont prising, a pump, two nu-asuring cylinders, a member interposed bctwccn tho pump and cylinders. chambers in said member olio for each cylinder and constarnly conunuuicating therewith, a pump chamber in said member to receive the discharge from said pump. a delivery chamber in said member, a drain chamber in said membcr. and means to connect either one of said cylinder chain-- bers to the pump chamber and the other to the delivery cl amber, or to simultaneously connect both cylinder chambers to the drain chamber.

3. A liquid dispensing apparatus, comprising, a pump, a member thereon having a chamber into which said pump discharges, two measuring cylinders on said member, chambers in said member one for each measuring cylinder and communicating therewith near the base thereof, a. discharge chamber in said niembeiga valve movable to positions to connect either one of the cylinder chambers to the lirst-named chamher and the other one of said cylinder chambers to the discharge chamber, a. drain chamber provided in said member. and an overflow pipe for each cylinder and communicating therewith near the top thereof, both said pipes communicating with the drain chamber.

4. A liquid dispensing apparatus, comprising, a pump, a member thereon having a chamber into which said pump discharges, two measuring cylinders on said member, chambers in said member one for each measurin cylinder and communicating therewith near the base thereof, a discharge chamber in said member, a valve movable to positions to connect either one of the cylinder chambers to the first-named chamber and the other one of said cylinder; cham hers to the discharge chamber, a drain chamber provided in said member, and an overflow pipe for each cylinder and communicating therewith near the top thereof, both said pipes communicating with the drain chamber, said valve being movable to another position to connect both cylindcr chambers to said drain chamber.

In a liquid dispensing apparatus, a reciprocating piston pump, a chambered member capping the cylinder of said pump to receive the discharge therefrom, two measuring cylinders supported on said member and connnunhrating with the interior thereof, a discharge passage in said member, means in said member to ll'rst connect one measuring cylinder to the pump cylinder and the other to the discharge passage and to subsequently connect the first measuring cylinder to the discharge passage and the second to the pump cylinder, a casing extending: from said member and disposed between said measuring cylinders, a piston rod for the pump movable through said member and into said casing, and rotary means in said member to reciprocate the piston rod.

a. in a liquid dispensing apparatus, a recipro ating piston pump, a chambered membcr capping the cylinder of said pump to reccivc the discharge lhcrcl'rom, two measurin; cylinders supported on said member and communicating with the interior thereof, a discharge passage in said member, means in said member-lo first connect one measur ng cylinder to the pump cylinder and the other 1 to the discharge passage and to subsequently connect the first measuring cylinder to the discharge passage and the second to the pump cylinder, a easing, extending from said membeand disposed between said measuring 0 linders, a piston rod for the pump mova dc througl said member and into said casing, rotary means in said member to reciprocate the piston rod, a member in the upper end of said easing;- disposed in the path of the piston rod and adapted to be engaged and moved thereby, and means restrieting the movement of said member to limit the movement of the piston rod.

7. In a liquid dispensing apparatus, a reciprocating piston pump. a chambered mem ber capping, the cylinder of said pump to receive the discharge therefrom, two meas- \ll'iiig cylinders supported on said member and communicating with the interior thereof, a disehargc passage in said member, means in said member to first connect one measuring cylinder to the pump cylinder and the other to the discharge passage, and to subsequently connect the first measuring: cylinder to. the discharge passage and the second to the pump cylinder, a casing extending; from said member and disposed between said measuring cylinders, a piston rod for the pump movable through said member and into said casing, rotary means in said member to reciprocate the piston rod, and means in the upper end of said easinp to arrest the piston rod and limit its upward travel.

8. lua liquid dispensing: apparatus. a reciproeatiup piston pump, a pedestal iiicasilu: the latter, a chambered member capping both cylinder and pedestal and reeeiving the discharge from the cylinder, two measuring cylinders supported on said member and ronunuuieating with the interior thereof, a dischar e passage in said member, means in said member to first ronuert one measuring cylinder to the pump cylinder and the other to the discharge passage and to subsequently eonnei't the first measuring cylinder to the dist-barge passage and the second to the pump cylinder. a casin; extending from said member and disposed between said measuring cylinders, a. piston rod for the pump movable through said member and into said raising, and rotary means in said member to reeiprorate the piston rod.

in a liquid dispensing apparatus, a re riproeatiug piston pump, a rhambered memher -appin, the oi'linder of said pump to receive the discharge therefrom, two nieasurin; i'ylinders sup 'iorted on said member and communiratiim with thiinterior thereof, a dist-barge passage in said member, means in said-lnenlln'r to first connect one measuring rylinder to the pump cylinder and the other to the dist-barge passage and to subsequently connect the first measuring: cylinder to the discharge passage and the second to the pump cylinder. a piston rod for the pump movable through said member, and rotary means in said member to reciprocate the piston rod.

10. A liquid dispensing apparatus, comprising, a. pump, a member thereon into which the pump discharges. two measurin cylinders supported on said member and communicating tlu-rewith near their lower ends, a common cap member for both cylinders and having" a passage to afford constant communication between said cylinders, a discharge passage provided in said. member, and means associated with the latter to connert the pump to one cylinder and the discharge passage to the other cylinder and to later eminent the [whip to the other cylinder and the dischi ge passage to the first named cylinder.

J OHN B; DAVIS. 

